[1] Simon's only daughter Clara married the military leader Alexander Köcski, Paul's predecessor in the position of Judge royal.

[1] Simon first appears in contemporary records in 1277, when he and Michael requested King Ladislaus IV of Hungary to confirm the former land donation of Csenke in Esztergom County (laid near present-day Mužla, Slovakia) in favor of their late father.

According to historian Gyula Kristó, Ivan Kőszegi brought whole Sopron County under his jurisdiction and annexed it to his emerging oligarchic province by 1285, when several local nobles were mentioned as his familiares.

In the first stage of the campaign, the Austrian troops commanded by Hugo von Taufert surrounded and besieged the fort of Nagymarton defended by Simon and Michael for 11 days.

In 1291, Andrew III invaded Austria, forcing Albert to withdraw his garrisons from the towns and fortresses, including Nagymarton, that he had captured two years before.

As a compensation, Andrew III donated the royal land of Schattendorf to Simon and Michael, and confirmed their right of ownership over Röjtökör in Sopron County (present-day Neudörfl, Austria).

[10] To compensate for the loss of Nagymarton, Simon bought the castle of Kabold (present-day Kobersdorf, Austria) in early 14th century from the Austrian owner, who acquired the fort after the "Güssing Feud" (although, the original proprietors Stephen II then Peter III Csák laid claim).